Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
Guo
←
English
Kuo
(doublet)
→
English
Kwok
(doublet)
→
English
Kuo
(doublet)
→
English
Kok
(mention)